{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["protein", "DNA", "RNA", "cell line", "cell type"], "input": "However, c-jun mRNA levels decreased significantly (1.73 +/- 0.08 vs. 1.16 +/- 0.09 arbitrary units, P < 0.01, young vs. old) in PBL from elderly individuals activated with PHA ."}
{"protein": ["PHA"], "DNA": [], "RNA": ["c-jun mRNA"], "cell line": [], "cell type": ["PBL"]}